Growing community of inventors

Conroe, TX, United States of America

Don C Gramlich

Average Co-Inventor Count = 3.00

ph-index = 1

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 3

Don C GramlichSam Sun Lloyd (1 patent)Don C GramlichMichael R Reaves (1 patent)Don C GramlichMichael R Reaves (1 patent)Don C GramlichDon C Gramlich (1 patent)Sam Sun LloydSam Sun Lloyd (3 patents)Michael R ReavesMichael R Reaves (1 patent)Michael R ReavesMichael R Reaves (3 patents)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Weatherford Technology Holdings, LLC (1 from 895 patents)

2. Weatherford/lamb, Inc. (1,209 patents)


1 patent:

1. 9784057 - Mechanical bi-directional isolation valve

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12/29/2025
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